Unitary dental apparatus



March 23 1926. 1,578,207

0. H. PIEPER UNITARY DENTAL APPARATUS I Filed Nov. 20, 1925 79 77 INVZENTOI? 73 Oscar .Pze Der' March 23 {1926; 1,578,207

0. H. PIEPER UNITARY DENTAL APPARATUS Filed Nov- 2 1925 3 Sheets-Sheet 2 INENTOR. .l agper WJ KM 7a (L 4z1s A TTORNEY March 23 1926.

O. H. PIEPER UNITARY DENTAL APPARATUS Filed NOV. 20, 1923 3 Sheets-Sheet 3 INV.ENTOR 21 A TTORNEY BY 'I Patented Mar. 25, lfi t'i.

UNITED STATES maze OSCAR H. EIETPER, GF ROCHESTER, NEW "JOB-K.

UNITARY DENTAL APPARATUS.

Application filed. November 20, 1923.

To all whom it may concern.

Be it known that 1, Oscar. H. Pin-PER, a citizen of the United States, residing at \ochester, in the county of Monroe and State of low York, have invented certain new and useful Improvements in Unitary Dental i-ipparatus; and I do hereby declare the following to be a full. clear, and exact description of the same, reterence being had to the accompanying drawings, forming part of this specification, and to the reference numerals marked thereon.

This invention is related to unitary dental apparatus 01" the variety adapted to present the appliance commonly employed by a dentist in a con pact and acc ible arrangement for use and control adgacent the dental chair, the chief object of the invention being to provide apparatus of this character comprising a motor driven tan and lamp and in the nature of an attachment for appliance supporting pedestal or stand such, for example, as disclosed in Letters Patent, il376356 granted jointly to Alphonse F. Pieper and myself, April 26, 1921.

To these and other ends the invention resides in certain improvements and combinations of parts all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Fig. 1 is a side elevation 01" an apparatus embodying the present invention;

Fig. 2 is an enlarged elevation as viewed from tl e right in Fig. 1, with parts broken away and removed.

Fig. 3 is an elevation of a portion of the appa atus viewed from the left in Figure 1;

F i 4!; is an enlarged central sectional elevation with parts broken aw y.

Fig. 5 is a detail elevation of parts shown 7 in Fig. 4c detached and partly in section;

Fig. 6 is a sectional view on the line 6 in Fig. 4;;

Fig. 7 is a bottom plan view of details shown in Fig. 4 at the line 7 7 Fig. 8 is a sectional elevation on the line 8 8 in Fig. i;

Fig. 9 is a plan view of parts shown in Fig. 4 as viewed from above at the line 7 a and Fig. -10 is a side elevation of a modified embodimentpart-ly broken away.

Serial No. 675,831.

Sim lar reference numerals throughout the several ws indicate the same parts.

'lhe pre rred embodiment of the invention herein isclosed by way of illustration of the principles involveth comprises apparatus in the nature oi a fixture or attachizient tor a dental appliance stand such as dis-c osed in said Letters Patent and providing in a nit-.11 y, self-contained form a projector or np and a motor driven tan with means for controlling the latter thus adsly located in combination with liances required by the dentist within reach beside the dental chair. lhe appliances provided by this invention are detachably assembled so that they may be individua ly removed when not in use and they are supplied with electric power from the line connections provided in the pedestal or stand, thereby simplifying the apparatus and electrical connections and by their accessibility enabling the dentist to operate in e rapidly and with less labor.

'fcrriug more particularly to the drawthe invention is shown. as comprising a hollow bracket arm 15 projecting in a generally horizontal direction from a base plate 15 adapted to be fixed by screws or in any other suitable manner to the side or rear walls of an appliance stand such as disclosed in said Letters Patent, as indicated. at 16. Arm 15 has hollow branching portions for supporting the lamp and tan respectively, one of these portions being shown at 17 in the form of a hollow sleeve to which is detachably fitted a generally cup shaped member 18 held against rotation as by means of a slot 19 in the base of the member and screw or pin 20 in the sleeve. Fixed in the upper end of the latter in any suitable manner is the half portion 21 ot a separable electric connection of the known pull plug and socket variety, the other half of which 22 is fined in member 18 by means of a screw Member 18 has fixed therein and extending upwardly therefrom a hollow standard 2% in the nature of a metal tube or conduit on the upper end oi which is adjustably supported a projector or lamp 25 such for example as employed by a dentist for illuminating the locus of work. Electrical conductors 26 are extended from the supply lines provided in the supporting pedestal or stand 16 through an opening in the wall of the latter and through the hollow arm 15 to the socket 21 and conductors 26 are extended from the cooperating plug 22 through standard 24 to the lamp. The invention thus provides a lamp in an advantageously elevated position and at the same time so disposed as not to obstruct the appliance stand to which it is attached. It is evident also from this construction that the lamp and its standard may be conveniently detached from the bracket when not in use.

Bracket arm 15 is constructed in separable sections one of which has the branching portion supporting the lamp as described above. This section has also a branching portion 2'? to which is detachably secured the second section 28 supporting the motor standard. Portion 27 tcrmiuates in a vertical face or bearing 29 having concentrically thereof an opening 30 in which is lined in any suitable manner a halt port-ion. 31 of a separable electric connection, 5 it-zrably of the pull plug and socket type, the terminals oil which are supplied with current by conductors 32 extending through the bracket arn'i from the interior of the pedestal supporting the same. The other half of the separable connection is fixed in a registering opening in a portion 34 secured to the bearing face 29 of the first arm section by means or the plug and socket already described and preferably 3150,1 01 increased strength, by dowel pins 35 and it desired by removable screws 36. The fan porting section of the bracket arm is thus readily detachable together with its electrical conductor portion.

The fan sect-ion 28 of the bracket has the vertically elongated shape shown and in its lower end is housed an adjustable control device for the motor presently to be described. The upper end 37 of this arm section has fixed thereto in any suitable manner a pipe or conduit standard 38 terminating in a cored swivel member 39, the lower end of which is rotatably fitted to the upper end of the standard and is circumterentially as at 40 to receive the end of a g and clamping screw ll carried by the standard. Member 39 has in its groove 4-0 a stop 42 preventing rotation of the member through more than one revolution and the member may be clamped in a desired position by means of the screw. The upper end 01:. the member carries spaced uprights 43 between which is pivotally supported the base 44 of the motor l5 carrying and driv- .ing the fan 46 which may thus be adjusted through various horizontal and vertical angles. The motor is supplied with current by conductors 4-7 connected therewith and passing into the swivel member 39 and from the latter throughconduit 38 into arm section 28 for connection with the motor control device housed therein, The construction described thus provides a motor driven tan in an advantageously elevated position above the appliance stand so as to avoid obstruction of the other appliances carried by the latter.

The motor control device comprises a resistancc element at? 01 any known and suit.- able variety, in the form in the present in stance of a hollow cylindrical coil through the bore of which extends a supporting spindle 49 the lower end of which is fixed in a plate 50 secured as by means of screws 51 to lugs 52 projecting from the section walls. This resistance element is tapped at longitudinally spaced points 53 to 57 inclusive, as well understood in the art, and the taps connected by conductors as shown with a series of contact. points 58 to (3st inclusive carried in insulated relation on a plate supported by and below plate 50. Pivotally supported on p ate (35 is a switch arm (it? carrying a spring contact plate 67 engag" ing the contact points individually as the arm is swung between stop pins ('38 on plate 65.

Referring more particularly to the electrical connections of the above parts, one of the conductors 4:7 is carried directly from the plug 33 to the motor. The other motor' connection is carried to a binding post (39 on plate and in electrical connection with the n'iovahle switch contact 67. The other terminal of the separable plug 33 is connected by a conductor 70 with a conductor 71 connecting one end of the resistance element. with contact point 60. \Vhen the movable switch contact 67 is engaged with this contact point 60 the motor is connected directly across the line. The adjacent contact points 58 and 59 are connected by conductors 72 and 73 respectively with adjacent taps of the resistance element. These contact points therefore are employed for including. different amounts of resistance in the motor circuit. Contact point 61 is a neutral position. Contact point 62 is connected by a conductor 74 with contact point 58 having therefore the same volt relation. Contacts 63 and 64 are connected by conductors 75 and 76 respectively with taps 54 and affording still different and greater resistance for the motor circuit. 7

' The fan motor is adapted for o}' eration by either direct or alternating current which latter requires different ranges of resistance for proper speed contol. Contacts 58, 59 and 60 therefore, representing the lower resistance range, are adapted for controlling the motor when employing alternating current, while contacts 69., 63 a d Ottare adapt d for control with direct current. It has been found that the total 'ange of movement of the switch or in other words the resistance variation may thus be separated into different portions or sub-ranges corresponding, respectively, to the different kinds of current employed and that a single control ClQVlCQ of this nature may be practically utilized by providing means tor selectively limiting the movement of the switch to the particular range suitable tor the current ei'nploycd'. Such means in. the present instance is in the nature of an ad justable stop screw or pin 77 adapted to be readily removed from one and inserted in the other of a pair of sockets T8 in a lip 79 on a bottom cover plate 79 for the bracket section. This cover is formed to provide a slot 80 in the bracket wall through which the switch arm 66 projects and in which it moves in proximity to a scale Sl marked with suitable indicia indicating the di'l'l'erent operating adjustments of the switch; By this means the switch is quickly adapted to one or the other kind 0t current employed.

The modified form of the invention shown in Fig. 10 is similar to that described above except that it adapts the apparatus for use with a different variety of pedestal or stand such as having an upwardly extending arm 80 which may also serve to carry an instrument tray Sol. 'In this embodiment the bracket arm 82, instead or the attaching plate 16, is extended downwardly in the form of a tubular portion 83 having at its lower end a socket 8st adapted to be pivotally itted on a stud 85 ot the stand or pedestal,

the parts being otherwise constructed and operated as described above.

The operation of the apparatus has been fully explained in connection with the de scription of its construction so that it is apparent from the above description that the invention provides compact self-contained apparatus comprising illuminating means and a fan the electrical connections for which are housed within the bracket and standards and thus protected against injury, removed as an obstruction about the apparatus and also concealed from view. The fan motor is supplied with an eliicient speed controlling device similarly housed and concealed with the bracket, while either the lamp or the tan with its standard may be readily detached from the fixture when not required. The invention thus adds to the appliances available at the dental chair by a simple and conveniently manipulated ap paratus adapted to be positioned in such a manner as not to obstruct the use of other appliances.

1 claim as my invention:

' 1. In apparatus of the character described the combination of a hollow arm adapted for attachment to a support and provided 'ith hollow branching portions, a fan and an electric motor for driving the same carried by one of said portions, an adjustable cont l dev ce fo sa d motor carried by said arm, and electrical conductors tended through said arm and branching tions and connected with said motor control device.

In apparatus of the character described, the combination of a hollow bracket arm comprising a section adapted for attaclm'ient to a dental appliance stand and a second section detachably connected with the lirst section, a hollow extension on said second section, a tan and a motor for driving the same carried by said extension, an adjustable control device for said motor housed in said second section, and electrical conductors extended through said bracket arm-and extension and connected with said. motor and control device.

23. In apparatus of the character de scribed, the combination of a hollow bracket arm comprising a section adapted for attachment to a dental appliance stand and a second section detachably connected with the first section by means including a pull plug and socket, a hollow upright standard on said second extension, a tan and a motor for driving the same carried by said extension, an adjustable control device housed in said second section and provided with means accessible externally of the latter for adjusting the same, and electrical conductors extended through said bracket, plug and socket and extension and connected with said motor and control device.

l. In apparatus of the character described the con'ibinatien of a hollow bracket arm comprising a section adapted for attachment to a dental appliance stand and a second section detachably connected with the first section, a fan and a motor therefor carried by said second section and adapted for operation by direct and alternating currents, an adjustable control device carried by said bracket arm having dilterent ranges of adjustment for each of said kinds of current, electrical conductors extended through said bracket arm and connected with said motor and device and means for selectively limiting); adjustment of said device to the range corre sponding to the kind of current employed.

5. ln apparatus of the character described the coml'iination ot a hollow bracket arm comprising a section adapted for attachment to a dental appliance stand and a second section detachably connected with the first section, a fan and a motor therefor carried by said second section and adapted for oper ation by direct and alternating; currents, a variable control levice carried by said bracket arm provided with a part having an adjusting movement diilerent portions of which correspond respectively to saic ditierent kinds of current, electrical conduc tors extended through said bracket arm and connected with said motor and device, and an adjustable stop adapted to be disposed porand

for limiting the movement of said part to the portion thereof corresponding to the kind of current used.

6. In apparatus of the character described, the combination of a hollow bracket arm comprising a section adapted for attachment to a dental appliance stand and a second section detachably connected with the first section, a tan and a motor therefor carried by said second section and adapted for operation by direct and alternating currents, a

control device housed within said bracket arm with a part accessible exteriorly thereof having an adjusting movement different portions of which correspond respectively to said dil'l'erent kinds of current, a dial on said bracket arm for indicating the different operating positions of said part, electrical conductors extended through said bracket arm and connected with said motor and device and an adjustable stop adapted to be disposed for limiting the movement of said part to the portion thereof corresponding to the kind of current used.

7. In apparatus of the character described, the combination of a hollow bracket arm comprising a section adapted for attachment to a dental appliance stand and a second section detachably connected with the first section, a support for an electrical device detachably carried by each of said sections, a fan and a motor for driving the same mounted on one of said supports, an adjustable control device for said motor, and electrical conductors extended through said bracket arm and connected with said motor and control device.

8. In apparatus of the character described, the combination of a hollow bracket arm comprising a section adapted for attachment to a dental appliance stand and a second section detachably connected with the first section by means including a pull plug and socket, hollow standards for electrical devices mounted on said sections, a fan and a motor therefor on one of said standards, and electrical conductors extended through said bracket arm and standards and connected with said motor.

9. The combination with a dental appliance stand of a hollow bracket arm having a detachable section, a fan and a motor therefor on said section, an adjustable control device for said motor housed in said section, and electrical conductors extended from said stand through said arm and detachably connected. with said motor and device.

10. The combination with a dental appliance stand of a hollow bracket arm, a plurality of hollow standards detaehably mounted on said arm, a fan and a motor therefor on one of said standards, an adjustable control device for said motor, and electrical conductors extended from said stand through said arm with detachable portions extended through said standards and one connected with said motor and control device.

OSCAR H. PIEPER. 

